2007 BMW Z4 vs. 1971 Riley 4
To start off, 2007 BMW Z4 is newer by 36 year(s). Which means there will be less support and parts availability for 1971 Riley 4. In addition, the cost of maintenance, including insurance, on 1971 Riley 4 would be higher. At 2,996 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (335 HP @ 7900 RPM) has 268 more horse power than 1971 Riley 4. (67 HP @ 5000 RPM). In normal driving conditions, 2007 BMW Z4 should accelerate faster than 1971 Riley 4. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW Z4 weights approximately 162 kg more than 1971 Riley 4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2007 BMW Z4 (315 Nm @ 2750 RPM) has 194 more torque (in Nm) than 1971 Riley 4. (121 Nm @ 2500 RPM). This means 2007 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1971 Riley 4.
Compare all specifications:
| 2007 BMW Z4 | 1971 Riley 4 | |
| Make | BMW | Riley |
| Model | Z4 | 4 |
| Year Released | 2007 | 1971 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2996 cc | 1622 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 335 HP | 67 HP |
| Engine RPM | 7900 RPM | 5000 RPM |
| Torque | 315 Nm | 121 Nm |
| Torque RPM | 2750 RPM | 2500 RPM |
| Engine Compression Ratio | 11.5:1 | 8.3:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1310 kg | 1148 kg |
| Vehicle Length | 4100 mm | 4540 mm |
| Vehicle Width | 1790 mm | 1620 mm |
| Vehicle Height | 1310 mm | 1510 mm |
| Wheelbase Size | 2500 mm | 2530 mm |
| Fuel Tank Capacity | 55 L | 45 L |
